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Gator Class A Stimulus Transmitter
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PRESS KIT
HI-RES IMAGE
PRESS RELEASE |
All Gator™ transmitters feature Class A power amplification, rugged, weatherproof housing and built-in VSWR antenna protection. It’s light weight makes Gator™ a versatile transmitter suited for both field and laboratory work. Gator™ features an agile frequency synthesizer, dynamically controlled power amplifier and a built-in modem and DTMF (touch tone) decoding for remote control of all transmitter parameters via a phone line or cellphone. Remote adjustments include the power level, channel or frequency assignment, and transmit On/Off. Included Windows® PC controller software and user adjustable knobs allow for pinpoint accurate adjustments in 0.1 dB increments, frequency adjustments and step size. Gator™ may be powered by standard 110-240 VAC power from any outlet, generator or battery-powered DC source. Dual cooling fans provide excellent heat dissipation and ensure the purest RF signal output. GSM modulated schemes and custom frequencies available upon request.
 Download Gator data sheet
Download Gator manual in the Technical
Support section
Download Gator CE Compliance
Report
Download Gator FCC Compliance
Report
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Features
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Pure
spectrum Class A power amplifier
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Weighs
under 23 pounds
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Power
amplifier with continuous adjustable power output ± 0.1dB over
32 dB range
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Water
resistant, rugged 18" x 15" x 6" ABS plastic case
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Microprocessor-controlled
with front panel soft-keys or remotely controlled with an internal
modem for user programmable modulation schemes, power levels,
channels, and frequencies.
- 240
x 64 LCD with vacuum fluorescent backlighting
- Calibration/Usage intergrated hours meter
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VSWR
antenna protection and internal forward and reverse measurement
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Dual
cooling fans with built-in thermal overheat protection for amplifier
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Battery
backed-up SRAM stores all user selectable parameters in the event
of a power loss
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Powered
from 110-240 VAC 50-60 Hz, UL, CSA, CE and FCC approved
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CW
identifier for FCC CP identification
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All
parameters can be adjusted remotely via RS-232 or the internal modem
or DTMF signaling tones
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| GENERAL SPECIFICATIONS: |
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| Display |
240 X 64 pixel graphic supertwist LCD (VF backlit) |
| Stability less than 1.5 PPM for first year, + for 1 PPM for aging |
| Output Power |
Continuous adjustable power output + 1.0 dB over > 32 dB range (below 1 GHz) |
| Power Adjustments |
Continuously adjustable via rotary knob or direct keypad entry in 1 dBm increments over > 20 dB on models above 1 GHz |
| Spurious Output |
> 55 dBc (decibels below carrier level) |
| Harmonics Output |
> 55 dBc (decibels below carrier level) |
| Power |
110-240 VAC 50-60 Hz, auto-switching, UL and CSA approved |
| 10 and 20 watt models may also be powered from +12VDC |
| Remote Control |
Via serial RS-232, internal modem or DTMF through telco |
| Output Power Monitoring |
Forward and reverse power monitored via internal power meters. Output is regulated to < +1.0 dB of setting at up to a 6:1 VSWR |
| MECHANICAL: |
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| Case Size |
18" x 15" x 6" |
| Weight |
23 lbs. |
| GSM GATOR: |
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Power Output |
20 watts into 50 ohms (GSM cellular model) |
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PA Class |
Linear, Class A amplifier |
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Output Adjustments |
+ 0.1 dB steps over 20 dB range to full output |
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Power Regulation |
Internal forward and reverse power meters with built-in circulator |
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Internal Protection |
Infinite VSWR (shuts off at > 6:1 SWR)and temperature protected |
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Tuning Range |
935.2-959.8 MHz |
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Tuning Increments |
+ 50/200 kHz steps via keypad or rotary control |
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Stability |
+ 2.0 PPM from 0 deg to 50 deg C |
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Type of Modulation |
GMSK internal data modulator |
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Data Rate |
270,833 symbols/second |
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Baseband Filter |
Gauss, B x T=0.3 |
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Remote Control |
Three ways, modem, DTMF or RS-232-C via rear panel |
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Display |
Graphic 240 x 64 EL backlighted |
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Power Input |
110, 220 VAC, 50-60 Hz or 23-27 VDC at 6 Amps |
| RF PERFORMANCE: |
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Frequency Stability |
+ 2 ppm from 10 to 50 C |
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Frequency Steps |
+ 200 kHz |
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Frequency Range |
Cellular or PCS models |
| DIGITAL SPECIFICATIONS: |
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Data
Rate |
effective
rate 271 kbps (per GSM specs) |
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Modulation |
0.3
GMSK (per GSM specs) |
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Frame
Length |
1250 bits |
| HOST PC SERIAL INTERFACE: |
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Serial Port |
RS-232C |
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Format |
8 data bits |
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Parity |
none |
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Start/Stop bits |
one |
| MODULATION SCHEMES : |
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CW |
Unmodulated CW signal. Note, GSM data modulation cannot be turned on from
the main Gator screen. |
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External |
Transmitter will modulate with user-supplied and filtered I and Q data from
an external source. This is via BNC connectors located on the top panel
of the Gator. |
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GSM RND |
Gator outputs GSM modulation with internally-generated and random PN (pseudo-random)
data. |
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GSM BUFF |
GSM modulation with user-downloadable BCCH (base station control channel)
stored data, downloaded by the user with PC loader software. This is via
the RS-232C jack in rear. User must supply the base station data to be output,
gator will repeat this transmission indefinitely. |
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| 698-805 MHz |
| 850-870 MHz |
| 800-900 MHz |
| 850-900 MHz |
| 930-970 MHz |
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25 or 45 Watts |
110/220 VAC or 24 VDC |
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| 1.850-2.200 GHz |
| 2.10-2.17 GHz |
| 2.3-2.36 GHz |
| 2.4-2.49 GHz |
| 2.5-2.7 GHz |
| 3.4-3.7 GHz (10 watt only) |
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10 or 20 Watts |
110/220 VAC or 12 VDC |
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Cellular, WiMAX, LTE, LMR, Paging, SMR, GSM, ISM, WCS, iDEN, AMPS, PACS, ETACS, IS-136, AWS and more
Available formats are GSM or IS-136, or 10 and
20 Watt Class A for CW only with > 20 dB power control
Power control
> 32 dB on all transmitters below 1 GHz
***Custom
frequencies available upon request***
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The Gator Controller is a software controller
application that allows complete control over BVS' Gator transmitter.
The application's interface mimics the top panel to allow Gator users
to seemlessly control all of its functions from any PC through the serial
cable. |
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2500-2700 MHz (8.5 dBi gain)
Mag-Mount Antenna (perfect for drive studies)
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Forecaster PC software allows Gator and compatible receivers such as Coyote to overlay all drive-study measurements for overall RF coverage. |
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Why won't my Gator turn on when I hook it up to a gas portable
generator?
Certain model generators output an impure noise spike in the AC output.
This anomaly has been traced to ignition noise riding on top of the
sine waveform. So while this output is fine for most devices requiring
AC power, the Gator will not turn on because it requires pure regulated
AC power. Several model Honda generators have been tested and approved
for this application, and also this problem can be easily remedied
by simply using an inexpensive AC surge suppressor found in any convenience
or hardware store.
Does Gator transmit a complete CDMA signal?
No, not really. The Crocodile is Berkeley's
premium CDMA stimulus transmitter. It has been designed to fit
in between existing base stations
using any available
PN offset, without effecting normal operation of the other base stations. It
outputs Pilot I & Q signals used for measuring correlated signal strength
and includes all timing and clocking circuits to meet IS-97A requirements,
including clock holdover in excess of 24 hours in the absence of GPS signals.
How do I control the Gator once it is up on the crane?
All of the Gator's necessary functions may be controlled via any touch-tone telephone
line, a cellular phone or from any PC that has Gator Controller software installed.
Every Gator is equipped with an internal RS-232C and Bell 202 modems to control
all functions from any PC with supplied software.
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